Simion, Andrada; Candu, Natalia; COJOCARU, BOGDAN; Coman, Simona M.; Bucur, C.; Forneli Rubio, Mª Amparo; Primo Arnau, Ana Maria; Man, Isabela Costinela; PARVULESCU, VASILE I.; García Gómez, Hermenegildo(Elsevier, 2020-10)
[EN] Films of few-layers defective N-doped or undoped graphene (10-15 nm) containing antimony oxide nanoparticles (15-30 nm) have been prepared on quartz by pyrolysis of alginate or chitosan adsorbing Sb(OAc)(3). XPS shows ...
Rendón-Patiño, Alejandra; Primo Arnau, Ana Maria; Cojocaru, Bogdan; Ion, Sabina Gabriela; Popescu, Dana G.; Parvulescu, Vasile; García Gómez, Hermenegildo(John Wiley & Sons, 2022-06-22)
[EN] Catalysts are frequently used as pelletized powdered materials, but rarely as thin films. The present work reports the use of 2D h-boron nitride on few layers defective graphene (h-BN/fl-G) films of about 10 nm thickness ...
El Kadib, Abdelkrim; Primo Arnau, Ana María; Molvinger, Karine; Bousmina, Mosto; Brunel, Daniel(Wiley-VCH Verlag, 2011-07-04)
The ability of chitosan biopolymer to coordinate vanadium, tungsten and molybdenum metallic species and to control their mineralisation growth provides a new family of surface-reactive organic-inorganic hybrid microspheres. ...
Lavorato, Cristina; Primo Arnau, Ana María; Molinari, Raffaele; García Gómez, Hermenegildo(American Chemical Society, 2014-02)
Using alginate, a natural polysaccharide from algae, simultaneously as a graphene
precursor and a templating agent for ceria nanoparticles, we have prepared a series of materials
consisting of highly crystalline ceria ...
Blandez, Juan F.; Esteve-Adell, Iván; Primo Arnau, Ana Maria; Alvaro Rodríguez, Maria Mercedes; García Gómez, Hermenegildo(Elsevier, 2016-01)
[EN] Nickel nanoparticles (NPs) supported on different undoped or doped with N or B graphenes (Gs) have been tested as catalyst for the hydrosilylation of aldehydes to obtain the corresponding siloxanes with high conversion ...
Candu, Natalia; Man, Isabella; Andrada, Simion; COJOCARU, BOGDAN; Coman, Simona M.; Bucur, C.; Primo Arnau, Ana Maria; García Gómez, Hermenegildo; PARVULESCU, VASILE I.(Elsevier, 2019-08)
[EN] N-doped defective graphene [(N)G] obtained by pyrolysis at 900 degrees C of chitosan contains about 3.7% of residual N atoms, distributed as pyridinic, pyrrolic and graphitic N atoms. It has been found that (N)G acts ...
He, Jinbao; Fernández-Blanco, Ana Cristina; Primo Arnau, Ana Maria; García Gómez, Hermenegildo(MDPI AG, 2018-01-22)
[EN] MoS2 is a promising material to replace Pt-based catalysts for the hydrogen evolution reaction (HER), due to its excellent stability and high activity. In this work, MoS2 nanoparticles supported on graphitic carbon ...
Primo Arnau, Ana María; Esteve Adell, Iván; Coman, Simona M.; Candu, Natalia; Parvulescu, Vasile; García Gómez, Hermenegildo(Wiley, 2016-01-11)
Pyrolysis of chitosan films containing Au3+ renders 1.1.1 oriented Au nanoplatelets (20 nm lateral size, 3-4 nm height) on a few layers of N-doped graphene ((Lambda) over baru/fl-G), while the lateral sides were 0.0.1 ...
Brahmi, Younes; Katir, Nadia; Macia Agullo, Juan Antonio; Primo Arnau, Ana María; Bousmina, Mosto; Majoral, JP; García Gómez, Hermenegildo; El Kadib, Abdelkrim(Royal Society of Chemistry, 2015)
The sol-gel co-condensation of organo-phosphonates to titanium alkoxides enables access to novel organic-inorganic hybrids based on phosphonate-bridged titanium dioxide. In this contribution, we bring new perspectives to ...
Mateo-Mateo, Diego; Esteve-Adell, Iván; Albero-Sancho, Josep; Primo Arnau, Ana Maria; García Gómez, Hermenegildo(Elsevier, 2017-02)
[EN] Cu2O nanoplatelets with preferential 2.0.0 facet orientation supported on few layers graphene were prepared as films in a single step by pyrolysis at 900 degrees C under inert atmosphere of Cu2+-chitosan precursor. ...
Esteve-Adell, Iván; Bakker, Nadia; Primo Arnau, Ana María; Hensen, Emiel; García Gómez, Hermenegildo(American Chemical Society, 2016-12-14)
Pt nanoparticles (NPs) strongly grafted on few layers graphene (G) have been prepared by pyrolysis under inert atmosphere at 900 degrees C of chitosan films (70-120 rim thickness) containing adsorbed H2PtCl6. Preferential ...
Latorre Sánchez, Marcos; Primo Arnau, Ana María; García Gómez, Hermenegildo(Wiley-VCH Verlag, 2013-11-04)
The right dope: Phosphorus-doped graphene was obtained by the pyrolysis of natural alginate that contained H2PO4− at 900 °C. This material catalyzes the generation of H2 from a water/methanol mixture upon irradiation with ...
Latorre Sánchez, Marcos; Primo Arnau, Ana María; Atienzar Corvillo, Pedro Enrique; Forneli Rubio, Mª Amparo; García Gómez, Hermenegildo(Wiley-VCH Verlag, 2015-02-25)
Nitrogen-doped graphene [(N)G] obtained by pyrolysis at 900 degrees C of nanometric chitosan films exhibits a Hall effect characteristic of n-type semiconductors. In contrast, boron-doped graphene [(B)G] obtained by pyrolysis ...
Anouar, Aicha; Katir, Nadia; El Kadib, Abdelkrim; Primo Arnau, Ana Maria; García Gómez, Hermenegildo(MDPI AG, 2019-09)
[EN] Adsorption of Pd(NH3)(4)(2+) in preformed chitosan-graphene oxide (CS-GO) beads and their subsequent reduction with NaBH4 afford well-dispersed, high dispersion (similar to 21%) of uniformly sized Pd nanoparticles ...
Frindy, Sana; Primo Arnau, Ana María; Lahcini, Mohamed; Bousmina, Mosto; García Gómez, Hermenegildo; El Kadib, Abdelkrim(Royal Society of Chemistry, 2015)
Easy shaping of chitosan (CS) as porous self-standing nanofibrillar microspheres allows their use as a palladium carrier. Amino-groups on CS enable the modulation of Pd coordination, giving rise to three different ...
Peng, Yong; Rendon-Patiño, Alejandra; Franconetti, Antonio; Albero-Sancho, Josep; Primo Arnau, Ana Maria; García Gómez, Hermenegildo(American Chemical Society, 2020-07-27)
[EN] Pyrolysis of alpha-, beta-, and gamma-cyclodextrins at 900 degrees C under Ar forms porous 3D graphitic carbon nanoparticles with remarkable crystallinity, in which the pore dimensions range from 0.74 to 1.1 nm in the ...
Rendon-Patiño, Alejandra; Niu, Jinan; Doménech-Carbó, Antonio; García Gómez, Hermenegildo; Primo Arnau, Ana Maria(MDPI AG, 2019-01)
[EN] Polystyrene as a thin film on arbitrary substrates or pellets form defective graphene/graphitic films or powders that can be dispersed in water and organic solvents. The materials were characterized by visible absorption, ...
Peng, Lu; Peng, Yong; Primo Arnau, Ana Maria; García Gómez, Hermenegildo(American Chemical Society, 2021-03-24)
[EN] Using Pluronic P123 as a structure-directing agent and chitosan as a carbon precursor, different porous carbons with remarkable morphologies such as orthohedra or spheres with diametrically opposite holes are obtained. ...
García-Baldoví, Alberto; Peng, Lu; Dhakshinamoorthy, Amarajothi; Asiri, Abdullah M.; Primo Arnau, Ana Maria; García Gómez, Hermenegildo(Elsevier, 2023-04)
[EN] Ni nanoparticles (approximate to 8 nm) have been prepared at about 15 wt% loading strongly grafted on N-doped graphitic carbon matrix [Ni@(N)C] by pyrolysis of Ni(OAc)2 adsorbed on chitosan. Ni@(N)C was used as catalyst ...
Atienzar Corvillo, Pedro Enrique; Primo Arnau, Ana María; Lavorato, Cristina; Molinari, Raffaele; García Gómez, Hermenegildo(American Chemical Society, 2013)
Pyrolysis at 900 degrees C under an inert atmosphere of alginate, a natural widely available biopolymer, renders a graphitic carbon that upon ablation by exposure to a pulsed 532 nm laser (7 ns, 50 mJ pulse(-1)) in ...